Nut-lock.



PATENTED JULY 24, 1906.

M. MOHR.

NUT LOCK.

APPLICATION FILED 3212.13.1906.

UNITED STATES PATENT oFFio-E.

MICHEL MOHR, OF- WAHPETON, NORTH DAKOTA.

' NUT-LQCK. T 7

Specification of Letters Patent. Application filed February 13, 1906. Serial No. 300,869. 7

rammed July '24, 1906.

To all whom it may concern..-

Be it known thatI, MICHEL MOHR, a citi zen of the United States, residing at Wahpewhich the following is a s ecification.

This invention embo ies novel improvements in nut-locking devices of the type embodying a'washer member having means to engage the bolt'so as to effectively prevent unscrewing movement of the nut; applied thereto.

An essential feature of the invention resides in the simplicity and cheapness of structure of the device comprising the same, affording resultant advantages of obvious importance.

For afull description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of I the means-for efiecting the result reference is. to be had to the following description and accompanying drawings, in which Flgure 1 1s a perspective view showing a nut-lock embodying the invention. Fig. 2 is a vertical sectional view. Fig. 3 is a side elevation showinga modification of the invention. Fig. 4 is a perspective view of a further modification. Fig. 5 is a vertical section of the nut-lock shown in Fig. 4. Fig. 6

is a pers ective view of the blank from which the nutock shown in Figs. 4 and 5 is formed.

Corresponding and like parts are referred to in the followin description and indicated in all the views of the drawings by the'same reference characters.

In the drawings the numeral'l designates the bolt, and the numeral 2 the nut.

In Figs. 1 and 2 the nut-lock illustrated comprises ,a washer member 3, bent or formed so as to be of concave-convex form in cross-section, said washer member 3 being provided with a suitable opening to receive the bolt 1 and having a lateral-extension 4, the outer end of which is bifurcated to formv a jaw 5, adapted to positively engage the bolt 1 at the point above the u per or outer side of the nut 2." Opposite t e extension 4 the washer member may be provided with an integral lip or flange 6, which is adapted to engage in the recessed side portion 7 of the nut. Opposite sides of the 'nut are preferably recessed, as at 7, the extension 4 engaging any one of the recessed portions; said extension being bent outwardly from the plane of the is very simple.

jaw with the bolt.

washer'member and the jaw 5 being bent laterally, soas to receive the bolt therein. One of the sides of the jaw, which is adapted to engage the bolt, is toothed, as shown at 8. .The

action of the nut-lock hereinbefore set forth As the nut 2 is screwed hard against the washer member 3 the latter, being comprised of a spring body portion, is sprung toward the part against which it is impinged, and this spring action tends to force the jaw member 5 into positive engagement with the threaded ortion of the bolt 1, so as to accomplish the" esired locking action of the washer, and thereby prevent the same fromrotating and the nut from unscrewing.

In Fi 3- the nutlock consists of substantially t e same parts as hereinbefore described, save that the washer member and its jaw extensionare sufficiently large to admit of turning of the nut after the same has been once adjusted to cause engagement of the contact of the washer against the under side of. the nut is relied upon in this instance to revent rotation of the nut, the washer memher of course being fixed by the cooperation of' its jaw member with the bolt.

Fig. 4 illustrates a further modification of the invention, and in this instance the washer member 3 consists of a spring-body of con- The spring of friction cavo-convex form, as described with reference to Figs. 1, 2, and 3, opposite ends of said washer member, however, being bent to form the extensions 4*, each of which is provided with a awportion 5, toothed, as shown at 8. Diagonally opposite sides of the jaws 5 of the extensions 4 are toothed, this being desirable, in that said jaws may thus cooperate with either a right or left hand nut, the teeth inclining toward the outer extremities of the jaw members. When the nut in Fig. 4 is screwed in position, the compression of the body of the washer member causes the enga ement of the jaws 5 in a manner which wi 1 be readily apparent; The washer member 3 may have a plurality of openin s 9, three of which are shown, the interme iate opening receiving the bolt and the other openings weakening the washer member to facilitate its spring action when the nut is screwed The nut-locks are simple and may be readily applied and detache in the practical embodiment' of the invention.

Having thus described the invention, what is claimed as new is 1. In a nut-lock, the combination of a bolt, a washer member provided with an opening receiving the bolt, a nut screwed against the outer side of said washer member, the washer member being provided with an integral extension projecting therefrom and having its outer end bifurcated to form a jaw, the jaw sprun 'by engagement of the nuttherewith.

3. n a nut-lock, the combination of a bolt, a nut,'a washer member for the nut of concavo-convex form in cross section, and a jaw extension for said washer member adapted to engage the bolt as said washer member is sprung by engagement of the nut therewith, t

e jaw extension aforesaid being integral with the washer member and adapted to engage the threaded portion of the bolt on opposite sides.

4. In a nut-lock, the combination of a bolt, a nut, a washer member of concavo-convex form in cross-section, an integral extension projecting from the washer member and ormed with a 'aw to receive the threaded outer portion of the bolt, a side of said jaw having teeth to engage said bolt when the nut is screwed against the washer member to spring the same and cause engagement of the jaw with the bolt.

5. In a nut-lock, the combination of a bolt, a nut, a washer member having opposite end portions thereof bent to form extensions, each of said extensions being provided with jaws adapted to engage the bolt at the threaded outer portion thereof, the body of the washer member having an opening to receive said bolt, the nut bein adapted to compress the body portion 0 the washer member to cause the jaws aforesaid to engage with the bolt.

In testimony whereof I affix my signature in presence of two witnesses.

MICHEL MOHR. [L. s.]

Witnesses:

J ENNIE WEIMAR, BELLE HARRISON. 

